121023210199 has 2 divisors, whose sum is σ = 121023210200. Its totient is φ = 121023210198.

The previous prime is 121023210167. The next prime is 121023210251. The reversal of 121023210199 is 991012320121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121023210199 - 2⁵ = 121023210167 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121023210199.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121023210109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60511605099 + 60511605100.

It is an arithmetic number, because the mean of its divisors is an integer number (60511605100).

Almost surely, 2^121023210199 is an apocalyptic number.

121023210199 is a deficient number, since it is larger than the sum of its proper divisors (1).

121023210199 is an equidigital number, since it uses as much as digits as its factorization.

121023210199 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 31.

The spelling of 121023210199 in words is "one hundred twenty-one billion, twenty-three million, two hundred ten thousand, one hundred ninety-nine".